which temperatures dos humidity forms ice crystals around copper pipe

[younaorgeva@gmail.com]

i need to know in which temperatures does humidity forms ice crystals around copper pipe
i need to know the exact mathematics

for example:
if the humidity is X
and the temperatures around the pipe is Y,
and i decrease the copper pipe temperatures
when will ice crystals form around the pipe?

X = any possible humidity on earth
Y = ambient temperature

Edited March 6, 2017 by younaorgeva@gmail.com

[studiot]

This is a duplicate of your earlier thread.

 

http://www.scienceforums.net/topic/103650-which-science-profession-i-need/

 

You have not supplied sufficient information to consider the problem.

 

Both the airflow details and temperature are required.

 

Also are you aware there are two definitions of humidity?

 

Absolute humidity and relative humidity?

 

https://www.google.co.uk/?gws_rd=ssl#q=absolute+humidity&*

[Klaynos]

You want a meteorologist, physicist or environmental physicist.

 

They will tell you about dew points and frost points. It'll also depend on things like surface roughness and airflow as studiot says.

 

I try and do this for glass (the prediction not the measurements) to know if my car will need deicing. I measure 4 different temperatures in my garden as well as the humidity. With some human interpretation I can now have about 99% success rate on whether I need to deice the cars or not. But I know my situation very well. You could feasibly add a wind speed and direction measurement (possibly even the area forecast might be enough) and then machine learning would probably work for me.

[studiot]

You want a meteorologist, physicist or environmental physicist.

 

 

 

Or perhaps a Heating Engineer.

 

Look up 'Heat Pumps'

 

Is this what you are interested in?

Edited March 6, 2017 by studiot

[younaorgeva@gmail.com]

 

Or perhaps a Heating Engineer.

 

Look up 'Heat Pumps'

 

Is this what you are interested in?

 

You want a meteorologist, physicist or environmental physicist.

 

They will tell you about dew points and frost points. It'll also depend on things like surface roughness and airflow as studiot says.

 

I try and do this for glass (the prediction not the measurements) to know if my car will need deicing. I measure 4 different temperatures in my garden as well as the humidity. With some human interpretation I can now have about 99% success rate on whether I need to deice the cars or not. But I know my situation very well. You could feasibly add a wind speed and direction measurement (possibly even the area forecast might be enough) and then machine learning would probably work for me.

i cant say for what i need the info.

the copper pipe is like the one you have in air conditioners.

lets sey the Absolute humidity is 0.020 (kg/m3)

and the ambient temperature is 35c.

the copper pipe is currently on room temp (35c)

 

now i take the remote control and start to decrease the temp 1c degree at a time.

in what temperature will the copper pipe will star forming ice?

 

(i need the mathematical formula

so the 0.020 (kg/m3) and the 35c is =x,y)

Edited March 6, 2017 by younaorgeva@gmail.com

[Klaynos]

Well the dew point is 23 Deg C (assuming you're at the surface). So if the copper pipe is below 0 it'll depend on all the other parameters rather than the humidity.

[younaorgeva@gmail.com]

not below 0 (minimum 10c )

Well the dew point is 23 Deg C (assuming you're at the surface). So if the copper pipe is below 0 it'll depend on all the other parameters rather than the humidity.

 

not below 0 (minimum 10c )

Edited March 6, 2017 by younaorgeva@gmail.com

[Klaynos]

Why would you get frost build up if there is nothing below freezing?

[younaorgeva@gmail.com]

Why would you get frost build up if there is nothing below freezing?

i dont know that is why im asking..

btw waht is your knowledge?

[Klaynos]

i dont know that is why im asking..

btw waht is your knowledge?

I have a PhD in physics. Some of which involved micro Kelvin liquids in pipes...

 

If you don't have anything below the freezing point you won't get frost. You might get condensation (dew!). Your pipe is well below the dew point so it'll depend on the specific set up.